hmm, the switch designed as a tiny container with two metallic pins in the bottom should work fine. Don't forget that the PIC can do some filtering on the signals and I think that should suffice just fine. /Marcus Simon Nield wrote: > One caveat on trying to use two mercury switches for this; not all mercury switches are 'tilt' > switches, a lot of them detect 'vibration'. In other words they are designed to detect movement in > any direction, so make sure you are not using this sort. > > Regards, > Simon > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.